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    引用块
    <blockquote>
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            <big><em>斜体1</em></big>
            <small><i>斜体2</i></small>
            <strong>粗体</strong>
            <del>删除线</del>
            <ins>下划线</ins>
            <font face="SimHei" size="1" color="black">黑体</font>
            <font face="SimSun" size="2" color="yellow">宋体</font>
            <font face="NSimSun" size="3" color="blue">新宋体</font>
            <font face="FangSong" size="5" color="green">仿宋</font>
            <font face="KaiTi" size="7" color="red">楷体</font>
            <br/>
            <sup>上标</sup>
            <code>
                console.log('hello');
            </code>
            <sub>下标</sub>
        <hr/>
    </blockquote>
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